<template>
  <div class="cart" :key="reload">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <div v-if="cartInfoList.length>0">
          <ul class="cart-list" v-for="item in cartInfoList" :key="item.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="item.isChecked"
              @change="switchSelect(item.skuId, $event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl" />
            <div class="item-msg">{{ item.skuName }}</div>
          </li>
          <li class="cart-list-con3">
            <div class="item-txt">语音升级款</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ item.skuPrice }}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="changeNum(-1,item.skuId,item.skuNum)">-</a>
            <input
              autocomplete="off"
              type="text"
              :value="item.skuNum"
              @change="updateNum(item.skuId,item.skuNum,$event)"
              minnum="1"
              class="itxt"
            />
            <a href="javascript:void(0)" class="plus" @click="changeNum(1,item.skuId,item.skuNum)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ item.skuNum * item.skuPrice }}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="delGoods(item.skuId)"
              >删除</a
            >
          </li>
          </ul>
        </div>
        <div v-else class="no-data">
          购物车暂无数据，请添加商品
        </div>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          :checked="checkedAll"
          @change="selectOrNot"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="delSelect">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>{{selected}}</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{totalPrice}}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapActions, mapState, mapGetters } from "vuex";
export default {
  name: "shopcart",
  data(){
    return {
      reload:0
    }
  },
  computed: {
    ...mapState({
      cartInfoList: (state) => state.shopcart.cartInfoList,
    }),
    ...mapGetters(["checkedAll", "select", "notSelect"]),
    selected(){
      let num = this.cartInfoList.reduce((pre,item)=>{
        if(item.isChecked===1){
          return pre+item.skuNum
        }else{
          return pre
        }
      },0)
      return num
    },
    totalPrice(){
      let price = this.cartInfoList.reduce((pre,item)=>{
        if(item.isChecked===1){
          return pre+item.skuNum*item.skuPrice
        }else{
          return pre
        }
      },0)
      return price
    }
  },
  methods: {
    ...mapActions(["getCartList"]),
    async delGoods(skuId) {
      try {
        const { code } = await this.$api.deleteGoods(skuId);
        if (code === 200) {
          console.log("删除成功");
        }
      } catch (err) {
        console.log(err);
      } finally {
        await this.getCartList();
      }
    },
    // 切换商品选中状态
    async switchSelect(skuID, e) {
      // 要拿到的是当前的选中状态
      let isChecked = +e.target.checked;
      try {
        await this.$api.switchChecked({ skuID, isChecked });
      } catch (err) {
        console.log(err);
      } finally {
        await this.getCartList();
      }
    },
    async selectOrNot(e) {
      try {
        let isChecked = +e.target.checked;
        let arr = [];
        if (isChecked === 1) {
          // 未选中的
          arr = this.notSelect;
        } else if (isChecked === 0) {
          // 选中的
          arr = this.select;
        }
        console.log(arr, isChecked);
        await this.$api.switchAll({ skuIdArr: arr, isChecked });
      } catch (err) {
        console.log(err);
      } finally {
        await this.getCartList();
      }
    },
    async delSelect() {
      try {
        this.select.forEach((item) => {
          this.delGoods(item);
        });
      } catch (err) {
        console.log(err);
      } finally {
        await this.getCartList();
      }
    },
    async changeNum(inc,skuId,total){
      if(total+inc<1){
        await this.delGoods(skuId)
        return ;
      }
      try{
        await this.$api.getAddToCart({skuId,skuNum:inc})
      }catch(err){
        console.log(err);
      }
      await this.getCartList()
    },
    async updateNum(skuId,skuNum,e){
      if(Number.isNaN(+e.target.value)){
        this.reload++
        return ;
      }
      try{
        let inc = +e.target.value-skuNum
        this.changeNum(inc,skuId)
      }catch(err){
        console.log(err);
      }finally{
        await this.getCartList()
      }
    }
  },
  async mounted() {
    await this.getCartList()
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .no-data{
        padding: 15px;
        height:50px;
        line-height: 50px;
        text-align: center;
        font-size: 25px;
      }

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 4.1667%;
        }

        .cart-list-con2 {
          width: 25%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 12.5%;
        }

        .cart-list-con5 {
          width: 12.5%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 12.5%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>